CBS News' 48 HOURS MYSTERY (10:00-11:00 PM) was first in households (3.6/07), viewers (5.38m), adults 25-54 (1.4/04) and adults 18-49 (1.0/03), according to Nielsen live plus same day ratings for Saturday, April 21. 48 HOURS MYSTERY was the night's #1 program in households, viewers, adults 25-54 and adults 18-49. Compared to the same night last year, 48 HOURS MYSTERY was up +9% in households and even in both adults 25-54 and adults 18-49.

The broadcast featured correspondent Peter Van Sant's report, "Mystery on Twin Peaks Drive," the story of a mother's quest for justice after her daughter's death was ruled a suicide. Barb Thompson refused to believe that her daughter, Ronda Reynolds, killed herself and launched her own investigation, enlisting the help of renowned true-crime writer Ann Rule. Rule, who ultimately wrote a bestseller based on her extensive work on the case, told Van Sant what she thought really happened to Ronda. Additionally, the broadcast featured interviews with Ronda's former husband, Ron Reynolds, and stepson Jonathan, who have both endured public scrutiny for their alleged involvement in Ronda's death. Van Sant also spoke with several law enforcement officials, who expressed their opposing views on the cause of death.

Click here to watch this episode of 48 HOURS MYSTERY, and follow 48 HOURS MYSTERY on Facebook and Twitter for exclusive videos, photos and the latest breaking news from the 48 HOURS team. 48 HOURS MYSTERY's "Mystery on Twin Peaks Drive" was produced by Susan Mallie and Dena Goldstein. The executive editor is Al Briganti. Susan Zirinsky is the executive producer of 48 HOURS MYSTERY.